Highlights:

• Special Weather Statement issued by Environment Canada
• Forecasts calling for 25 to 50 mm total rainfall from this evening into Saturday, with the possibility of greater amounts in some areas due to thunderstorms.
• Risk that smaller local watercourses could rise and spill their banks this weekend.

Message:

Environment Canada has issued a Special Weather Statement due to significant amounts of rainfall in the forecast. Showers could begin as early as this evening, with the bulk of the rain falling on Friday, and the possibility of rain extending into Saturday. Total rainfall during this period is estimated at somewhere between 25 and 50 mm. There is also the risk of thunderstorms that could drop additional rain in some areas. There is still some uncertainty with regards to the track and timing of this weather system and a close watch of weather conditions is recommended.

Given current watershed conditions, the amount of rain forecast could cause ponding in low lying areas and localized flooding. Smaller local watercourses would rise and some could spill their banks. If the higher amounts of rainfall appear, the Lower Thames Valley Conservation Authority would expect to be operating the Indian-McGregor Creek Diversion Channel to prevent flooding in the south end of the city of Chatham. Flooding along the Thames River itself is not predicted at this time. However, high water levels on Lake St. Clair are still impacting downstream areas of the river and the higher rainfall amounts could cause the river to rise up in Chatham enough to flood over the sidewalk along the river in the downtown.

Residents are advised to check their properties for potential drainages issue and to clear catch basins and storm sewer inlets of leaves and other debris in order to help reduce flooding.

People should take extra caution and avoid the river, ditches, and streams. The combination of slippery banks, and fast moving can be dangerous. Standing water can also present its own unseen hazards. Children, pets and livestock should be kept away from the water.

Officials will continue to monitor the situation and update this advisory

This message will be in effect until October 18, 2021.

Message Contact: Jason Wintermute (jason.wintermute@ltvca.ca)